Working OCO orders are uniquely numbered/lettered with a single digit for identification purposes.
The single digit is any number from 1-9 and letters of the alphabet except A, L, and S. If you have more than 32 working OCO chains, orders 33 and above are marked with an asterisk.
Numbers and letters do not indicate the sequence in which orders were placed, as numbers and letters are reused when the order is no longer working.
The number/letter is indicated on the order information icon, the order information popup, and on Orders and Positions.
To place a spread OCO order
1. Click the special orders button.
2. Place the orders (in this example, one limit order and one stop order).
3. Click the special orders button.
4. Confirm both orders.
5. If one order is filled, the other is cancelled. Notice the status in the fill report: